1297732064 has 24 divisors (see below), whose sum is σ = 2562989688. Its totient is φ = 646814080.

The previous prime is 1297732061. The next prime is 1297732067. The reversal of 1297732064 is 4602377921.

It is an interprime number because it is at equal distance from previous prime (1297732061) and next prime (1297732067).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297732061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53822 + ... + 74109.

It is an arithmetic number, because the mean of its divisors is an integer number (106791237).

Almost surely, 2^1297732064 is an apocalyptic number.

It is an amenable number.

1297732064 is a deficient number, since it is larger than the sum of its proper divisors (1265257624).

1297732064 is a wasteful number, since it uses less digits than its factorization.

1297732064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128258 (or 128250 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 1297732064 is about 36024.0484121371. The cubic root of 1297732064 is about 1090.7578446008.

The spelling of 1297732064 in words is "one billion, two hundred ninety-seven million, seven hundred thirty-two thousand, sixty-four".